Battery pack and new energy automobile
By arranging an exhaust channel in the battery pack shell between the exhaust slot and the liquid cooling plate, the problem of thermal runaway gas emissions from the battery core is solved, efficient gas exhaust and cooling processing is achieved, and space utilization is improved and costs are reduced. .
Patent Information
- Application Number
- CN202323493914.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Existing battery packs require additional exhaust ducts and thermal insulation protection when dealing with gases generated by thermal runaway from the battery cell, resulting in low space utilization and increased cost.
Design a battery pack, the shell of which is equipped with an exhaust groove, the explosion-proof valve of the battery core is connected to the exhaust groove, and the liquid cooling plates are arranged at intervals to form an exhaust channel connected with the exhaust groove for exhausting gas.
Through this design, the battery pack does not need to be equipped with separate exhaust pipes and thermal insulation protection parts, which improves space utilization and reduces costs. The safety of the battery pack is ensured through the cooling treatment of the liquid cooling plate.
Smart Images
Figure CN222380694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power batteries, and in particular to a battery pack and a new energy vehicle. Background Art
[0002] With the continuous development and widespread application of battery technology, the safety of batteries has become increasingly prominent. After long-term use and charging and discharging, batteries will have the risk of expansion, extrusion, and short circuit, which may lead to thermal runaway of the battery cells. When thermal runaway occurs in the battery pack, the gas generated by the battery cells needs to be discharged to avoid affecting other components in the battery pack.
[0003] At present, exhaust ducts and heat insulation protection parts are usually separately set in the battery pack to discharge the gas generated by thermal runaway of the battery cell. However, the design of the exhaust duct and heat insulation protection parts requires additional size space, resulting in low space utilization of the entire battery pack and increased costs. Utility Model Content
[0004] The purpose of the utility model is to provide a battery pack and a new energy vehicle, which can improve space utilization, reduce costs and have high safety.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a battery pack, comprising:
[0007] A housing, wherein the housing is provided with an exhaust groove;
[0008] A battery pack, the battery pack comprising a plurality of battery cells, the plurality of battery cells are all disposed in the housing, and an explosion-proof valve of each of the battery cells is located in the exhaust groove, the explosion-proof valve being used to discharge gas generated by thermal runaway of the battery cells into the exhaust groove; and
[0009] A plurality of liquid cooling plates are arranged at intervals, one of the liquid cooling plates is provided between two adjacent battery cells, each of the liquid cooling plates has a gap with the bottom wall of the shell, and an exhaust channel is formed between the two adjacent battery cells, and the exhaust channel is connected to the exhaust groove for discharging the gas in the exhaust groove.
[0010] In an optional embodiment, the number of the battery pack and the exhaust groove are both multiple, and the multiple battery packs and the multiple exhaust grooves are arranged at intervals along the first direction and correspond one to one; the multiple battery cells of each battery pack are arranged at intervals along the second direction, and the multiple liquid cooling plates are arranged at intervals along the second direction;
[0011] The first direction and the second direction form an angle.
[0012] In an optional embodiment, the shell includes a bottom plate and a plurality of support plates arranged on the bottom plate, the plurality of support plates are arranged at intervals along the first direction, and are arranged at intervals with the plurality of liquid cooling plates along the third direction, and an exhaust groove is formed between two adjacent support plates and the bottom plate; each of the battery packs is arranged on two adjacent support plates, and the explosion-proof valves of the plurality of battery cells are arranged on the exhaust groove;
[0013] The first direction, the second direction and the third direction are perpendicular to each other.
[0014] In an optional embodiment, the shell also includes a first side plate, a second side plate, a third side plate and a fourth side plate which are connected end to end in sequence, the first side plate and the third side plate are spaced apart along the second direction, and the second side plate and the fourth side plate are spaced apart along the first direction; the first side plate, the second side plate, the third side plate and the fourth side plate are simultaneously connected to the bottom plate, and the two ends of the multiple liquid cooling plates are respectively connected to the second side plate and the fourth side plate.
[0015] In an optional embodiment, the battery pack further includes a plurality of fixing members, the plurality of fixing members are spaced apart along the first direction, and two ends of the plurality of fixing members are respectively connected to the first side plate and the third side plate, and one battery pack is provided between two adjacent fixing members.
[0016] In an optional embodiment, the battery pack further includes a first fixed beam and a second fixed beam, the first fixed beam and the second fixed beam are spaced apart in the shell, and the plurality of battery cells are located between the first fixed beam and the second fixed beam.
[0017] In an optional embodiment, the first fixed beam is provided with a first exhaust cavity, and the first exhaust cavity is communicated with the exhaust groove; and / or,
[0018] The second fixed beam is provided with a second exhaust cavity, and the second exhaust cavity is communicated with the exhaust groove.
[0019] In an optional embodiment, the battery pack further includes a third fixed beam, which is disposed in the shell and located between the first fixed beam and the second fixed beam to separate the plurality of battery cells into two parts, one part of the plurality of battery cells being disposed between the first fixed beam and the third fixed beam, and the other part of the plurality of battery cells being disposed between the second fixed beam and the third fixed beam.
[0020] In an optional embodiment, the third fixed beam is provided with a third exhaust cavity, and the third exhaust cavity is communicated with the exhaust groove.
[0021] In a second aspect, the utility model provides a new energy vehicle, comprising a battery pack as described in any one of the aforementioned embodiments.
[0022] The beneficial effects of the embodiments of the utility model include:
[0023] The battery pack includes a shell, a battery pack and a plurality of liquid cooling plates. The shell is provided with an exhaust groove. The battery pack includes a plurality of battery cells. The plurality of battery cells are arranged in the shell, and the explosion-proof valve of each battery cell is located in the exhaust groove. The explosion-proof valve is used to discharge the gas generated by thermal runaway of the battery cell into the exhaust groove; the plurality of liquid cooling plates are arranged at intervals, and a liquid cooling plate is arranged between two adjacent battery cells. Each liquid cooling plate has a gap with the bottom wall of the shell, and forms an exhaust channel between the two adjacent battery cells. The exhaust channel is connected to the exhaust groove to discharge the gas from the exhaust groove. In other words, there are multiple exhaust channels, which are connected to the exhaust groove at the same time; the plurality of battery cells are arranged in the shell, and form a relatively closed space with the exhaust groove. When the battery cell has thermal runaway, the high-pressure gas will be discharged from the explosion-proof valve to the exhaust groove for pressure relief; because the space is relatively closed, the gas will encounter resistance in the exhaust groove to form a backflow, and flow to the adjacent nearest exhaust channels in turn, so that the gas is discharged from the plurality of exhaust channels in turn. In this way, the battery pack does not need to be equipped with a separate exhaust duct and heat insulation protection parts, thereby not increasing the space size and cost; in addition, since a liquid cooling plate is provided in the exhaust channel, the high-temperature gas generated by the thermal runaway can also be cooled, thereby ensuring the safety of the battery pack. Therefore, the battery pack can improve space utilization, reduce costs, and has high safety.
[0024] The new energy vehicle includes a battery pack, which has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;
[0027] Figure 2 An exploded view of a battery pack provided in an embodiment of the utility model;
[0028] Figure 3 A schematic structural diagram of a battery pack from a first perspective provided by an embodiment of the utility model;
[0029] Figure 4 for Figure 3 AA section view in the figure;
[0030] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;
[0031] Figure 6 A schematic diagram of a portion of the structure of a housing provided in an embodiment of the utility model;
[0032] Figure 7 for Figure 6 A partial enlarged view of point C in the middle;
[0033] Figure 8 A schematic structural diagram of a battery pack from a second viewing angle provided in an embodiment of the utility model.
[0034] Icon: 1000-new energy vehicle; 100-battery pack; 10-shell; 11-exhaust groove; 12-bottom plate; 13-support plate; 14-first side plate; 15-second side plate; 16-third side plate; 17-fourth side plate; 20-battery pack; 21-battery cell; 211-explosion-proof valve; 30-liquid cooling plate; 40-exhaust channel; 50-fixing part; 60-first fixed beam; 61-first exhaust cavity; 62-first exhaust hole; 70-second fixed beam; 71-second exhaust cavity; 72-second exhaust hole; 80-third fixed beam; 81-third exhaust cavity; 82-third exhaust hole; 200-vehicle body. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0038] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0039] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] As described in the background technology, after long-term use and charging and discharging, the battery will have the risk of expansion, extrusion, and short circuit, which may lead to thermal runaway of the battery cell. When thermal runaway occurs in the battery pack, the gas generated by the battery cell needs to be discharged to avoid affecting other components in the battery pack. At present, exhaust ducts and thermal insulation protective parts are usually separately provided in the battery pack to discharge the gas generated by thermal runaway of the battery cell. However, the design of the exhaust duct and thermal insulation protective parts requires additional size space, resulting in low space utilization of the entire battery pack and increased costs.
[0042] Based on this, please refer to Figure 1-Figure 8 The embodiments of the present utility model provide a battery pack 100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, they can improve space utilization and have low cost.
[0043] It should be noted that in the following content, the first direction mentioned is Figure 1-Figure 8 The X direction is shown in the figure, and the second direction is Figure 1-Figure 8 The Y direction is shown in the figure, and the third direction is Figure 1-Figure 8The Z direction is shown in FIG. The battery pack 100 and the new energy vehicle 1000 will be described in detail below.
[0044] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 100 and a vehicle body 200 . The battery pack 100 is disposed on the vehicle body 200 , thereby providing electrical energy to the vehicle body 200 to realize various functions of the vehicle body 200 .
[0045] Specifically, please refer to Figure 2-Figure 5 , Figure 2 An exploded view of the battery pack 100 provided in this embodiment, Figure 3 This is a schematic structural diagram of the battery pack 100 provided in this embodiment from a first perspective, Figure 4 for Figure 3 AA section view in the figure, Figure 5 for Figure 4 A partial enlarged view of point B in the middle; combined Figure 2-Figure 5 The battery pack 100 includes a shell 10, a battery pack 20 and a plurality of liquid cooling plates 30. The shell 10 is provided with an exhaust groove 11. The battery pack 20 includes a plurality of battery cells 21. The plurality of battery cells 21 are all arranged in the shell 10, and the explosion-proof valve 211 of each battery cell 21 is located in the exhaust groove 11. The explosion-proof valve 211 is used to discharge the gas generated by thermal runaway of the battery cell 21 into the exhaust groove 11; the plurality of liquid cooling plates 30 are arranged at intervals, and a liquid cooling plate 30 is provided between two adjacent battery cells 21. Each liquid cooling plate 30 has a gap with the bottom wall of the shell 10, and an exhaust channel 40 is formed between the two adjacent battery cells 21. The exhaust channel 40 is connected with the exhaust groove 11 to discharge the gas in the exhaust groove 11.
[0046] That is to say, there are multiple exhaust channels 40, which are connected to the exhaust groove 11 at the same time; multiple battery cells 21 are arranged in the shell 10, and form a relatively closed space with the exhaust groove 11. When the battery cell 21 has thermal runaway, the high-pressure gas will be discharged from the explosion-proof valve 211 to the exhaust groove 11 for pressure relief; because the space is relatively closed, the gas will encounter resistance in the exhaust groove 11 to form a backflow, and flow to the adjacent nearest exhaust channel 40 in turn, so that the gas is discharged from the multiple exhaust channels 40 in turn. In this way, the battery pack 100 does not need to be equipped with a separate exhaust duct and heat insulation protection part, so as not to increase the space size and cost; in addition, since the liquid cooling plate 30 is provided in the exhaust channel 40, the high-temperature gas generated by the thermal runaway can also be cooled, thereby ensuring the safety of the battery pack 100. Therefore, the battery pack 100 can improve space utilization, reduce costs, and has high safety.
[0047] Please combine Figure 2In this embodiment, the number of battery packs 20 and exhaust grooves 11 are both multiple, and the multiple battery packs 20 and the multiple exhaust grooves 11 are arranged at intervals along the first direction and correspond one to one; the multiple battery cells 21 of each battery pack 20 are arranged at intervals along the second direction, and the multiple liquid cooling plates 30 are arranged at intervals along the second direction; wherein the first direction and the second direction form an angle. That is, each battery pack 20 corresponds to an exhaust groove 11, and a liquid cooling plate 30 is inserted between two adjacent battery cells 21 in each battery pack 20, so that the multiple exhaust grooves 11 and the multiple exhaust channels 40 are staggered and connected, so that when each battery cell 21 has thermal runaway, the gas can be discharged into the exhaust groove 11 and discharged from the adjacent exhaust channels 40 in sequence, further improving the exhaust efficiency.
[0048] Combination Figure 2 and Figure 5 It should be noted that, since the liquid cooling plate 30 is extended in the first direction, when the gas enters the exhaust channel 40, it will also flow in the first direction and flow out from both ends of the liquid cooling plate 30; in other words, when one of the battery cells 21 has thermal runaway, the generated gas will be discharged into the exhaust groove 11, and flow in the exhaust groove 11 along the second direction, and then enter the adjacent exhaust channels 40 in turn, and flow in multiple exhaust channels 40 along the first direction, and be discharged from both ends of the exhaust channel 40, that is, the two ends of the liquid cooling plate 30.
[0049] For further information, please refer to Figure 6 and Figure 7 , Figure 6 This is a partial structural diagram of the housing 10 provided in this embodiment. Figure 7 for Figure 6 The local enlarged view of the C in the middle, combined with Figure 6 and Figure 7 The housing 10 includes a bottom plate 12 and a plurality of support plates 13 disposed on the bottom plate 12. The plurality of support plates 13 are spaced apart along a first direction and spaced apart with the plurality of liquid cooling plates 30 along a third direction. An exhaust groove 11 is formed between two adjacent support plates 13 and the bottom plate 12. Each battery pack 20 is disposed on two adjacent support plates 13, and the explosion-proof valves 211 of the plurality of battery cells 21 are disposed on the exhaust groove 11. The first direction, the second direction and the third direction are perpendicular to each other. In other words, there is a gap between the liquid cooling plate 30 and the support plate 13, and an exhaust channel 40 is formed between the liquid cooling plate 30 and the battery cells 21 located on both sides of the liquid cooling plate 30. The support plate 13 can provide support for the battery cells 21, and form an exhaust groove 11 with the bottom plate 12, so that the bottom of the battery cell 21 is simultaneously mounted on two adjacent support plates 13, and the explosion-proof valve 211 is aligned with the exhaust groove 11, further improving the exhaust efficiency.
[0050] To better fix the liquid cooling plate 30, please refer to Figure 8 , Figure 8 A schematic diagram of the structure of the battery pack 100 provided in this embodiment from a second perspective, combined with Figure 2 and Figure 8 The shell 10 also includes a first side plate 14, a second side plate 15, a third side plate 16 and a fourth side plate 17 which are connected end to end in sequence, the first side plate 14 and the third side plate 16 are spaced apart along the second direction, and the second side plate 15 and the fourth side plate 17 are spaced apart along the first direction; the first side plate 14, the second side plate 15, the third side plate 16 and the fourth side plate 17 are connected to the bottom plate 12 at the same time, and the two ends of the multiple liquid cooling plates 30 are respectively connected to the second side plate 15 and the fourth side plate 17.
[0051] It should be noted that since the gas generated by thermal runaway of the battery cell 21 will be discharged from both ends of the exhaust channel 40, in this embodiment, one part of the two ends of the liquid cooling plate 30 is respectively connected to the second side plate 15 and the fourth side plate 17, and the other part needs to have a certain gap with the second side plate 15 and the fourth side plate 17 respectively to allow the gas to be discharged; of course, in other embodiments, through holes can also be opened on the second side plate 15 and the fourth side plate 17 to connect with the exhaust channel 40 through the through holes to discharge the gas out of the shell 10.
[0052] Please continue to combine Figure 2 In order to better fix the battery cell 21, in this embodiment, the battery pack 100 further includes a plurality of fixing members 50, which are arranged at intervals along the first direction, and the two ends of the plurality of fixing members 50 are respectively connected to the first side plate 14 and the third side plate 16, and a battery pack 20 is provided between two adjacent fixing members 50. Through the action of the plurality of fixing members 50, the battery cell 21 can be fixed in the first direction.
[0053] Furthermore, in order to better fix the battery cells 21, the battery pack 100 further includes a first fixing beam 60 and a second fixing beam 70, the first fixing beam 60 and the second fixing beam 70 are arranged at intervals in the housing 10, and the plurality of battery cells 21 are located between the first fixing beam 60 and the second fixing beam 70. Specifically, in this embodiment, the two ends of the plurality of fixing members 50 are respectively connected to the first fixing beam 60 and the second fixing beam 70, and through the action of the first fixing beam 60, the second fixing beam 70 and the plurality of fixing members 50, the battery cells 21 can be fixed in the first direction and the second direction at the same time, thereby further improving the working stability of the battery cells 21.
[0054] Since the first fixing beam 60 and the second fixing beam 70 are located on the housing 10 and above the exhaust slot 11, in order to further improve the exhaust efficiency, please combine Figure 4In this embodiment, the first fixed beam 60 is provided with a first exhaust cavity 61, which is communicated with the exhaust groove 11, and the second fixed beam 70 is provided with a second exhaust cavity 71, which is communicated with the exhaust groove 11; that is, the gas in the exhaust groove 11 can also flow into the first exhaust cavity 61 and the second exhaust cavity 71, thereby increasing the exhaust path of the gas generated by the thermal runaway of the battery cell 21, thereby further improving the exhaust efficiency. Of course, in other embodiments, the exhaust cavity can also be provided only in the first fixed beam 60 or the second fixed beam 70, as long as the exhaust effect can be improved.
[0055] Please combine Figure 4 and Figure 8 In this embodiment, the first fixed beam 60 is provided with a first exhaust hole 62, and the second fixed beam 70 is provided with a second exhaust hole 72. The first exhaust hole 62 is communicated with the first exhaust cavity 61, and the second exhaust hole 72 is communicated with the second exhaust cavity 71. By providing the first exhaust hole 62 and the second exhaust hole 72, the gas in the first exhaust cavity 61 and the second exhaust cavity 71 can be discharged.
[0056] It should be noted that, in other embodiments, an exhaust pipe may also be provided in the battery pack 100 , and the exhaust pipe may be connected to the first exhaust chamber 61 or the second exhaust chamber 71 at the same time, so as to discharge the gas generated by thermal runaway and avoid affecting other components in the battery pack 100 .
[0057] It should also be noted that in order to achieve connectivity between the exhaust groove 11 and the first exhaust cavity 61 and the second exhaust cavity 71, air intake holes (not shown) can be respectively opened in the first fixed beam 60 and the second fixed beam 70, and the air intake holes are located on the side of the first fixed beam 60 and the second fixed beam 70 close to the exhaust groove 11.
[0058] Please continue to combine Figure 2 and Figure 8 In order to further improve the stability of the battery cells 21, in the present embodiment, the battery pack 100 further includes a third fixed beam 80, which is disposed in the shell 10 and located between the first fixed beam 60 and the second fixed beam 70, so as to separate the multiple battery cells 21 into two parts, one part of the multiple battery cells 21 is disposed between the first fixed beam 60 and the third fixed beam 80, and the other part of the multiple battery cells 21 is disposed between the second fixed beam 70 and the third fixed beam 80.
[0059] At the same time, in order to shorten the flow path of the gas generated by thermal runaway, in this embodiment, the third fixed beam 80 is provided with a third exhaust cavity 81, and the third exhaust cavity 81 is connected to the exhaust groove 11. Further, the third fixed beam 80 is provided with a third exhaust hole 82, and the third exhaust hole 82 is connected to the third exhaust cavity 81, so as to discharge the gas in the third exhaust cavity 81.
[0060] It should also be noted that in order to achieve communication between the third exhaust chamber 81 and the exhaust groove 11, an air inlet hole (not shown) can also be opened on the side of the third fixed beam 80 close to the exhaust groove 11, and the air inlet hole can be connected with the exhaust groove 11 to achieve the gas in the exhaust groove 11 to flow into the third exhaust chamber 81 and be discharged from the third exhaust hole 82.
[0061] In summary, an embodiment of the utility model provides a battery pack 100 and a new energy vehicle 1000, the battery pack 100 includes a shell 10, a battery pack 20 and a plurality of liquid cooling plates 30, the shell 10 is provided with an exhaust groove 11, the battery pack 20 includes a plurality of battery cells 21, the plurality of battery cells 21 are all arranged in the shell 10, and the explosion-proof valve 211 of each battery cell 21 is located in the exhaust groove 11, the explosion-proof valve 211 is used to discharge the gas generated by thermal runaway of the battery cell 21 into the exhaust groove 11; the plurality of liquid cooling plates 30 are arranged at intervals, and a liquid cooling plate 30 is provided between two adjacent battery cells 21, each liquid cooling plate 30 has a gap with the bottom wall of the shell 10, and an exhaust channel 40 is formed between the two adjacent battery cells 21, and the exhaust channel 40 is connected to the exhaust groove 11 for discharging the gas in the exhaust groove 11. That is to say, there are multiple exhaust channels 40, which are connected to the exhaust groove 11 at the same time; multiple battery cells 21 are arranged in the shell 10, and form a relatively closed space with the exhaust groove 11. When the battery cell 21 has thermal runaway, the high-pressure gas will be discharged from the explosion-proof valve 211 to the exhaust groove 11 for pressure relief; since the space is relatively closed, the gas will encounter resistance in the exhaust groove 11 to form a backflow, and flow to the adjacent nearest exhaust channels 40 in turn, so that the gas is discharged from the multiple exhaust channels 40 in turn.
[0062] In this way, the battery pack 100 does not need to be equipped with a separate exhaust duct and heat insulation protection member, thereby not increasing the space size and cost; in addition, since the exhaust channel 40 is provided with a liquid cooling plate 30, the high-temperature gas generated by the thermal runaway can also be cooled, thereby ensuring the safety of the battery pack 100. Therefore, the battery pack 100 can improve space utilization, reduce costs, and has high safety.
[0063] The new energy vehicle 1000 includes the battery pack 100 , and has all the functions and beneficial effects of the battery pack 100 .
[0064] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A battery pack, characterized in that: include: A housing (10), wherein the housing (10) is provided with an exhaust groove (11); A battery pack (20), the battery pack (20) comprising a plurality of battery cells (21), the plurality of battery cells (21) being arranged in the housing (10), and the explosion-proof valve (211) of each battery cell (21) being located in the exhaust groove (11), the explosion-proof valve (211) being used to discharge gas generated by thermal runaway of the battery cell (21) into the exhaust groove (11); and A plurality of liquid cooling plates (30) are arranged at intervals, one of the liquid cooling plates (30) is provided between two adjacent battery cells (21), each of the liquid cooling plates (30) has a gap with the bottom wall of the shell (10), and an exhaust channel (40) is formed between the two adjacent battery cells (21), and the exhaust channel (40) is connected to the exhaust groove (11) to discharge the gas in the exhaust groove (11).
2. The battery pack according to claim 1, characterized in that: The battery pack (20) and the exhaust groove (11) are both multiple in number, and the multiple battery packs (20) and the multiple exhaust grooves (11) are arranged at intervals along a first direction and correspond one to one; the multiple battery cells (21) of each battery pack (20) are arranged at intervals along a second direction, and the multiple liquid cooling plates (30) are arranged at intervals along the second direction; The first direction and the second direction form an angle.
3. The battery pack according to claim 2, characterized in that: The housing (10) comprises a bottom plate (12) and a plurality of support plates (13) arranged on the bottom plate (12); the plurality of support plates (13) are arranged at intervals along the first direction and are arranged at intervals with the plurality of liquid cooling plates (30) along the third direction; an exhaust groove (11) is formed between two adjacent support plates (13) and the bottom plate (12); each of the battery packs (20) is arranged on two adjacent support plates (13), and the explosion-proof valves (211) of the plurality of battery cells (21) are arranged on the exhaust groove (11); The first direction, the second direction and the third direction are perpendicular to each other.
4. The battery pack according to claim 3, characterized in that: The shell (10) further comprises a first side plate (14), a second side plate (15), a third side plate (16) and a fourth side plate (17) which are connected end to end in sequence, the first side plate (14) and the third side plate (16) are arranged at intervals along the second direction, and the second side plate (15) and the fourth side plate (17) are arranged at intervals along the first direction; the first side plate (14), the second side plate (15), the third side plate (16) and the fourth side plate (17) are simultaneously connected to the bottom plate (12), and the two ends of the multiple liquid cooling plates (30) are respectively connected to the second side plate (15) and the fourth side plate (17).
5. The battery pack according to claim 4, characterized in that: The battery pack (100) further comprises a plurality of fixing members (50), wherein the plurality of fixing members (50) are arranged at intervals along the first direction, and two ends of the plurality of fixing members (50) are respectively connected to the first side plate (14) and the third side plate (16), and one of the battery packs (20) is arranged between two adjacent fixing members (50).
6. The battery pack according to claim 1, characterized in that: The battery pack (100) further comprises a first fixed beam (60) and a second fixed beam (70), wherein the first fixed beam (60) and the second fixed beam (70) are arranged at intervals on the housing (10), and the plurality of battery cells (21) are located between the first fixed beam (60) and the second fixed beam (70).
7. The battery pack according to claim 6, characterized in that: The first fixed beam (60) is provided with a first exhaust cavity (61), the first exhaust cavity (61) being in communication with the exhaust groove (11); and / or, The second fixed beam (70) is provided with a second exhaust cavity (71), and the second exhaust cavity (71) is communicated with the exhaust groove (11).
8. The battery pack according to claim 6, characterized in that: The battery pack (100) further comprises a third fixed beam (80), wherein the third fixed beam (80) is arranged on the shell (10) and is located between the first fixed beam (60) and the second fixed beam (70) so as to separate the plurality of battery cells (21) into two parts, wherein one part of the plurality of battery cells (21) is arranged between the first fixed beam (60) and the third fixed beam (80), and the other part of the plurality of battery cells (21) is arranged between the second fixed beam (70) and the third fixed beam (80).
9. The battery pack according to claim 8, characterized in that: The third fixed beam (80) is provided with a third exhaust cavity (81), and the third exhaust cavity (81) is communicated with the exhaust groove (11).
10. A new energy vehicle, characterized in that: A battery pack (100) comprising any one of claims 1 to 9.